Emergency lock



May 2, 1.933- F. J. BISHOP 1,906,517

EMERGENCY LOCK Filed Oct. 6, 1931 2 Sheets-Sheet l ATTORNEY F. J. BISHOP EMERGENCY LOCK May 2, 1933.

Filed Oct. 6, 1951 2 Sheets-Sheet 2 v Mr ,Y E 4 *mi mh@ u 2 0 m5.. no zvw vm mk m .o fmw` ,NWN f M? n W u LH 9 a d 6 5 All u E n l@ Patented May 2, 1933 FRANK J. BISHOP. oFnocHEs'rnj'NEwYoRx', AssIGNoR 'ro'sARGnNr & eREErTLnAli.`y INC., or RocHEsr-Eannw Yom; acoRPonA'rIoir or Yoan EMERGENCY'LOCK I .y f Appiicaffmi inea otober e, 1931. ',seriai 10,567,224.. i

I This invention relates to emergencyflocls of the kind usedv for emergency rexit doors k1n theaters, schools and other vplaces where people-Acongregate'and there is danwel' of bf or panic.. The principal ob]ect o? thls 1nvention is the provision of a lock of this kind which `is simple and inexpensive to make and which eiciently locks a door from without.. ut is readily-released at anytime an 10 outward push from within.:v

Another object of the inventionisthe provision( of a lock, ofthisl type whieh is vre-k' versible, :that is, a lockwhich isreadilyap-4 plicable to adoorswinging either tothe rlght 1.5 or the left.

l To these and 'other ends,y the invention re{ sides in pertain .arrangements and combina` tions of parts as will fully* appear from the iollowingggdescription` Vtaken in conjunction 2. with theaccompanying. drawingsfforming a part-,of this specification. .Y Inthedrawingsrj-- .K Fig. 1 ,is a frontelevationofa lock constructed according to one.; embodiment ofthe l 25 invention, the coverof lthefcasing beingremoved toezgpos'e theinteriorand the handle beingbroke'n away to `conserirre space; p

Fig. 2 is a horizontal section ofthe .same takeny substantiallyon linef2-2 of Fig. 1 30 and looking in the directionnof the' arrow at saidline; n p Y A, y.1

Fig. 3 is afragmentary detail `viewjshowing relative positions of certain boltactuating parts when the bolt is withdrawn; f l

Fig. L is a similar View but also showing the manuallyl controlled means for holding the bolt Withdrawn; f 4 y Fig. 5 isa sectional detail onthe line 5 5,

Figs. 6 and '7 show lnf'ace views and in reverse lpositions the lock mounted uponf a door, theA door being VbrokenV away andfinr .dicated' in broken-lines; .j p Fig 8 is al planl of thelock as mounted in Y Fig. 9 isf a side view ofthe ysame Fig. lO'is .fa sectionalrviewfon the line 10-10, Fig. 1, and

Figs. A11 and 12 shownyjdetailcooperating interlocking facesof the operating lever and the driving member..

`In ,the drawings, similary l. reference numerals referto similar kparts throughout theseveral views. Y The numeral 1 represents ka locking bolt mounted foroscillating movement on a stud from the bottom wall 4 4of an open-faced f casing,v the *wall 6 ofywhichl isfcut away being rod ,9,"the head 8b`eing ,pivotally con# nected tothe bolt by means yoa stud 10.y f

k2 having bearings .in spaced lugs 3 upstanding d carried lby the boltvand arrangedv acrossthe 'pocket rparauiwith the Stud 2.; l y y Oscillation .ofi the bolt is eil'ectedb'y re-y ciprocatinglmovement of the rod 9 which lies substantially .parallelwith the sidesoff the casing rand is guided in theslotted end of a lug 11 projecting Vfromthe wall y4,.'a1ndthe"y rod is provided.. with across-head 12 on kits freeend." 1A spring 13 is coiled about the rod and engagesthe fixed lugll` at one end and n' the head :member 8 atits other end and serves t0 I'ekSlIltlyproject the bolt. 1'

1A stud 14 projects `from the wall 4 of the' casing/.0n whichis y) oivoted a bolt actuating member 1,5..- A circular portion 1610i? this actuating member l'projectsfforw'ardly and has its center cut away to clear the rod 9 and to formlradial lugs 17 oneon each yside of the rod normally engaging the head 12 ad-` jacent its yopposite ends.y :The rod actuating member 15 is also. formed with aspur gear segment, 18,y which Lmeshes with teeth on one side of a racky 19 slidably kmounted kin `the casingy and providedy with. Vteeth on an adjacent sideengaged by a drivingy member 20. The: driving member 2O has a star-shaped opening22 engaged by alstarwheel 23 'jour-y nalle'd in the casing, and also 'engaged in a star-'shaped openingfrin an arm211:k whereby7 the arniis operatively connected with .the driving member. The star wheelis detach# ably secured inthe casing so that it may be released and removed from the drivingmem'- bera'ndlritsangular position,y with respect to the driving member, reversed, as indicated in Figs. 6 and 7 which permits the lock being placed at either the left or right side of a door.

It is preferable to h-ave an operating handle extend substantially the full width of the door and, t-o this end, the outer end of the arm 24 has a reduced lateral extension 27 adapted to be received in an end of a tubular handle bar 28the opposite end of which is simil-arly supported upon an arm29 mounted to turn coaXially with the arm 24 in a bearing 30 projecting outwardly froma plate31 secured to the door 26, lateral movement of the handl-e to engage or disengage the arm 24and the driving member 20 causing the arm 29 to engage or disengage the bearing member 30.

The casing 5 is pro-vided with opposing recesses at opposite ends of the rack V19. In

one of these recesses isa block 34 removably secured to the bottom wall thereof by means of a screw, and in the other recess is .a suitable resilient coiled spring 36, the block acting as a stop for the rack by engagement with p a shouldered portion 37 thereon, and the spring engaging between a similar shouldei-ed portion on the opposite end of the rack and the end wall'of the recess in which it lies. The block 34 and spring 36. are interchangeable, and the direction of operative movement of the driving member 20 against the spring is determined by the arrangement of Vthese two interchangeable members, in either event rotary movement of the driving member causing through the intermeshing racks and gear segmentsV rotary movement of the member 1.5, which in turn, through one or Vother' of the lugs 17 acting against the cross-head 12, effects rearward movement of th-e rod 9 and withdraws 'the bolt 1. On reliu lease of the operating handle, it and the members 20, 19 and 15 are returned to their normal positions by the 'spring 36, while the spring 13 throws the rod 9` forward to proj ect the bolt 1, the lugs 17 when both are engaged by the cross-head 12, acting as stops to limit forward movement of the bolt. v

Any suitable means may be provided for holding the bolt withdrawn. In this instance, a sleeve 38 is mounted to turn on a stud 39 on the wall of the casing and carries an arm 40 extending therefrom and adapted to engage the crosshead 12 and prevent forward movement of the rod. I A leaf spring 41 anchored between the studs 42 and 43 has its free end bearing against flats on the sleeve 38 to yieldingly hold the sleeve with its arm 40 in either operative or 'inoperative position. The arm 40 is turned by means of a suitable key insertedin a socket provided therefor in the reduce-d end of the sleeve 38 projecting through the cover plate 45 of the casing. This cover plate is held in place by screws 46 thre-adedly arranged in alined bosses on the casing and cover, and the casing 5 vis secured to a door 26 by suitable fastening devices such as screws, engaging through openings 49 provided therefor in the wall 4 adjacent its top and bottom edges.

The lock is placed on the inside of a door and at the left, as in Fig. 6, or at the right as in Fig. 7 accordingly as the door is hinged at the right or the left side; If placed as in Fig. 6, the positions of the operating lever, spring 36 and stop block 34 are as shown in Figs.l 1, 2 and 10, but should the lock be in` verted and placed as in Fig. 7 the lever, including parts 28 and 29, is reversed so as to swing and occupy the same position relatively to the lock asin Fig. 9, and the spring 36 and block 34 are interchanged. In either location of the lock the handle has the same ,relative position to the door and the same jected when the handle is released. The bolt is projected independently of the return of the operating parts 15, 2() and 28 but not until the handle has been released to permit return of such parts, andV if desired, the bolt is held withdrawn by ymeans of the arm 40.

It will be understood that the bolt 1 by its surface 50 engaging the keeper in the door frame moves inwardly when the door is being closed, and that when thedoor is closed the bolt, by action of the spring 13, is

'projected 'withV the surface 51 thereof engagingthe keeper to hold Ythe door against being o ened until the bolt is withdrawn by means o the operating handle.

' Although only one embodiment of the invention is shown and described herein, it will be understood that this application is intended to cover such changes or modifications as come within the spirit of the invention or scope of the following claims.

What I claim is:

1. In an emergency lock, the combination with a casing having a bottom wall comprising a support, of a pivoted bolt arranged to project through an opening in said casing, a rod slidably mounted on ysaid support and pivotally connected with the bolt, resilient Vmeans on said rod for( normally projecting the bolt, an operating member rotatably leo mounted on lsaid support and operatively connected with said rod for withdrawing4 the `bolt when turned in either direction, manually operatedV means rotatably mounted on said support for actuating said rotary member, a stop also rotatably kmounted on said support and manually operable to and from operative engagement with said rod to hold the bolt retracted against the tension of said resilient means, and separate resilient means for returning the rotary member and its operating means tonormal position While the bolt is held in withdrawn position.

2. In an emergency lock, the combination of a casing, a bolt pivoted therein, resilienty means for projecting the bolt, a bolt retracting member comprising a gear segment, a

rack slidably mounted in said casing and. operatively connected with saidv ear seg` ment, a manually operated mem er com-k my name. s

FRANK J. BISHOP. 

